The museum is located in the historic Mayor, but also has a second facility. The collections are presented at permanent or temporary exhibitions and systematized in the departments of archeology, history, ethnography, numismatic, arts and crafts and education.
"Walk through the streets of the city" is an exhibition showing the appearance of old Trzcianka in old postcards. The exhibition "One Earth, Many Stories" is dedicated to people who came to the city after 1945. We will see here a reconstructed confectionery, kitchen and carpentry workshop. The archeological exhibition is divided into two parts - the first contains the effects of archaeologists 'work, the second the results of historians' inquiries.
The exhibition "In a former school" shows the lives of students in a pre-war and post-war school. In the first part, we will look into the village class of the Second Polish Republic with characteristic benches, a teacher's chair and numerous objects that are no longer used at school. In the second we will see a class from the sixties - benches with inkwells, wooden pencil cases, antique abacus or aprons with shields.